Round thermostat guard



FIG. 1 is a left front perspective view of the thermostat guard;

FIG. 2 is a front elevation view of the thermostat guard, the rear view, not shown, is substantially an inverted image thereof, and;

FIG. 3 is a top plan view of the thermostat guard, the bottom being substantially a mirror image thereof. 

The ornamental design for a thermostat guard, substantially as shown and described. 